1046653440 has 160 divisors (see below), whose sum is σ = 3824219520. Its totient is φ = 239222784.

The previous prime is 1046653409. The next prime is 1046653441. The reversal of 1046653440 is 443566401.

It is a tau number, because it is divible by the number of its divisors (160).

It is not an unprimeable number, because it can be changed into a prime (1046653441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44026 + ... + 63494.

It is an arithmetic number, because the mean of its divisors is an integer number (23901372).

Almost surely, 2^1046653440 is an apocalyptic number.

1046653440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1046653440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1912109760).

1046653440 is an abundant number, since it is smaller than the sum of its proper divisors (2777566080).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1046653440 is an equidigital number, since it uses as much as digits as its factorization.

1046653440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19502 (or 19486 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 33.

The square root of 1046653440 is about 32352.0237388637. The cubic root of 1046653440 is about 1015.3153880895.

The spelling of 1046653440 in words is "one billion, forty-six million, six hundred fifty-three thousand, four hundred forty".